1227407-85-3

Upstream product

• 108-24-7 acetic anhydride 
• 81829-64-3 ethyl 2-amino-4-(4-fluorophenyl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carboxylate 

Relevant academic research and scientific papers

Convenient selective synthesis of 5,7,8,9-tetrahydro-4H,6H-chromeno[2,3-d] [1,3]oxazin-4-ones

A method for the synthesis of 5,7,8,9-tetrahydro-4H,6H-chromeno[2,3-d][1,3] oxazin-4-ones was developed. The method involves acid-catalyzed acylation of substituted ethyl 2-amino-4-aryl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3- carboxylates with acetic anhy